置氢TC16钛合金室温变形行为  

Room Temperature Deformation Behavior of Hydrogenated TC16 Titanium Alloy

作　　者：孙中刚[1] 陈国清[1] 周文龙[1] 王耀奇[2] 侯红亮[2] 李志强[2] 

机构地区：[1]大连理工大学,辽宁大连116023 [2]北京航空制造工程研究所,北京100024

出　　处：《稀有金属材料与工程》2011年第2期357-361,共5页Rare Metal Materials and Engineering

摘　　要：应用准静态、动态压缩等试验研究TC16钛合金的室温变形行为;利用OM、XRD等手段分析置氢后合金的显微组织和相演变。结果表明:氢降低了合金的相变点,促进了亚稳β相的生成。静态压缩时,随着变形速度和氢含量的增加,合金的变形极限先降低后增加。氢含量为0.6%(质量分数)、变形速度为100mm/min时,合金变形能力已经达到甚至超过原始合金,流变应力较原始下降200MPa。动态变形时,材料发生明显动态软化,流变应力表现出高温变形特征。Room temperature deformation behavior of the hydrogenated TC16 alloys was investigated by quasistatic compression and dynamic compression tests.Microstructure evolution and phase compositions of the hydrogenated TC16 alloys were analyzed by OM,XRD,etc.The results show that the addition of hydrogen decreases the phase transition temperature and promotes the formation of the metastable β phase.In static tests,the deformation limit decreases at first and then increases with the increase of the hydrogen concentration and the deformation rate.For the specimens containing 0.6wt% H deformed at 100 mm/min,the deformation limit reaches or even exceeds that of the initial alloy and the flow stress is decreased by about 200 MPa.In dynamic compression tests,clear dynamic softening occurs and the flow stress exhibits the character of the high temperature deformation.

关 键 词：TC16钛合金 室温变形 

分 类 号：TG146.23[一般工业技术—材料科学与工程]